Abstract
We report all-solution-processed transparent conductive electrodes based on Ag nanowire (AgNW)-embedded metal oxide composite films for application in organometal halide perovskite solar cells. To address the thermal instability of Ag nanowires, we used combustive sol-gel derived thin films to construct ZnO/ITO/AgNW/ITO composite structures. The resulting composite configuration effectively prevented the AgNWs from undergoing undesirable side-reactions with halogen ions present in the perovskite precursor solutions that significantly deteriorate the optoelectrical properties of Ag nanowires in transparent conductive films. AgNW-based composite electrodes had a transmittance of ∼80% at 550 nm and sheet resistance of 18 Ω sq-1. Perovskite solar cells fabricated using a fully solution-processed transparent conductive electrode, Au/spiro-OMeTAD/CH3NH3PbI3 + m-Al2O3/ZnO/ITO/AgNW/ITO, exhibited a power conversion efficiency of 8.44% (comparable to that of the FTO/glass-based counterpart at 10.81%) and were stable for 30 days in ambient air. Our results demonstrate the feasibility of using AgNWs as a transparent bottom electrode in perovskite solar cells produced by a fully printable process.
Original language | English |
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Pages (from-to) | 6308-6316 |
Number of pages | 9 |
Journal | Nanoscale |
Volume | 8 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2016 Mar 28 |
Bibliographical note
Funding Information:This research received financial support from a National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (no. 2012R1A3A2026417).
Publisher Copyright:
© The Royal Society of Chemistry 2016.
All Science Journal Classification (ASJC) codes
- Materials Science(all)